Abramowicz, H;
Abt, I;
Adamczyk, L;
Adamus, M;
Aggarwal, R;
Antonelli, S;
Aushev, V;
... Zhautykov, BO; + view all
(2018)
Further studies of isolated photon production with a jet in deep inelastic scattering at HERA.
JOURNAL OF HIGH ENERGY PHYSICS
, 2018
, Article 32. 10.1007/JHEP01(2018)032.
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Abstract
Isolated photons with high transverse energy have been studied in deep inelastic ep scattering with the ZEUS detector at HERA, using an integrated luminosity of 326 pb−1 in the range of exchanged-photon virtuality 10-350 GeV2. Outgoing isolated photons with transverse energy 4 < E T γ < 15 GeV and pseudorapidity − 0.7 < η γ < 0.9 were measured with accompanying jets having transverse energy and pseudorapidity 2.5 < E T jet < 35 GeV and −1.5 < ηjet < 1.8, respectively. Differential cross sections are presented for the following variables: the fraction of the incoming photon energy and momentum that is transferred to the outgoing photon and the leading jet; the fraction of the incoming proton energy transferred to the photon and leading jet; the differences in azimuthal angle and pseudorapidity between the outgoing photon and the leading jet and between the outgoing photon and the scattered electron. Comparisons are made with theoretical predictions: a leading-logarithm Monte Carlo simulation, a next-to-leading-order QCD prediction, and a prediction using the k T -factorisation approach.
| Type: | Article |
|---|---|
| Title: | Further studies of isolated photon production with a jet in deep inelastic scattering at HERA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP01(2018)032 |
| Publisher version: | http://dx.doi.org/10.1007/JHEP01(2018)032 |
| Language: | English |
| Additional information: | This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics, Lepton-Nucleon Scattering (experiments), Photon Production, QCD, Zeus Barrel Calorimeter, E-T Photons, Cross-Section, P(P)Over-Bar Collisions, Prompt Photons, Transverse-Momentum, Hadron-Collisions, Root-S=1.96 TeV, ep Scattering, Photoproduction |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10043471 |
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